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OCCTNewsUpdate Notes for OCCT 17.0.0
Game update

Update Notes for OCCT 17.0.0

OCCT · published 30 Jun 2026, 09:25 UTC

All newsPlayers around this dateRead on Steam

OCCT v17.0.0 is available !

Changelog :

  • Main : Revamped the structure of OCCT's startup from the ground up. We now use a custom, auto-extractible package bringing many benefits
  • Main : Optimized startup time by about 10 to 30%
  • Main : 15 to 30% lowered memory usage of the GUI
  • Main : Binary size reduced by 30%
  • Main : Auto update has been revamped to be much more reliable
  • Main : Fixed : OpenCL adapters could appear twice in the list due to some drivers not following the specs. We actively dedupe them now. Applies to VRAM and Compute
  • Monitoring : Updated engine
  • Monitoring : OCCT will now periodically dump data to disk rather than memory, lowering the memory usage of the app mid-certificates
  • Monitoring : Revamped the "save state to disk" feature : the last known state popup will now be MUCH more reliably displayed in case of a crash
  • Memory : Introducing our new Modular Memory test ! Instead of going a fixed routine, build your own using 18 different blocks from TM5, Memtest, our team, allowing you to customize and target your specific scenarios for Memory testing
  • Memory : Embedded presets allows you to quickly get started with 6 known tests made by our team or by the community targeting max Heat dissipation on the sticks, a replica of what TM5 is doing, bit fade detection, etc.
  • Memory : Error reporting now reports faulty bits instead of faulty 64-bit erroneous bits. Error count will probably get larger from now on.
  • Enterprise : Command line parameters now accept ~ and environment variables under Linux

Enjoy !

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Game update11 Sep 2026Update notes for OCCT 17.1.2OCCT 17.1.2 is available ! Changelog : · Main : Fixed a bug where the CPU test and the CPU + RAM test would kill each other if both selected in a combined test · Main : Idle timer reserved for GPU test initialization is now disabled when no GPU test is selected in a combined test · Main : Fixed an issue where the update process would fail to launch the downloaded version on Linux (This will onl…Game update10 Sep 2026Update Notes for OCCT 17.1.1OCCT 17.1.1 is available ! Changelog : · Enterprise : Fixed an issue where OCCT would refuse to use some skins in the diagnostic edition Enjoy !Game update9 Sep 2026Update Notes for OCCT 17.1.0OCCT 17.1.0 is available ! Changelog : · Main : Improved the tests crashing behaviour, crashes will be reported immediately instead of waiting for a timeout, and provide more diverse error codes · Main : Tightened test launching process to improve security · Main : Lowered our requirements on Linux - we now support Debian 10-era distributions. This includes about all currently supported linux d…